p-Dichlorobenzene
North Harrison Water Supply Corporation
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 3 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL) 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-11-10 | Q1455243004 | ND |
| 2015-03-20 | Q1510571007 | ND |
| 2015-05-27 | Q1519430020 | ND |
| 2015-05-27 | Q1519430014 | ND |
| 2015-05-27 | Q1519430011 | ND |
| 2016-11-01 | Q1647008014 | ND |
| 2016-11-01 | Q1647008011 | ND |
| 2016-11-01 | Q1647008012 | ND |
| 2017-10-04 | Q1748860003 | ND |
| 2017-10-04 | Q1748860002 | ND |
| 2017-10-04 | Q1748860013 | ND |
| 2018-11-06 | Q1844291006 | ND |
| 2018-11-06 | Q1844291004 | ND |
| 2018-11-06 | Q1844291003 | ND |
| 2019-03-05 | Q1909314001 | ND |
| 2019-03-05 | Q1909314005 | ND |
| 2019-03-05 | Q1909314003 | ND |